Viral kinetic curves of primary human fibroblast-like synoviocytes (HFLSs) and human hepatocellular carcinoma (Huh-7) cells after in vitro infection with Ebola virus/Kikwit (EBOV/Kik), Marburg virus/Angola (MARV/Ang), Ebola virus/Makona-C05 (EBOV/Mak), or mouse-adapted EBOV/Yambuku-Mayinga (ma-EBOV/Yam), with titers determined by plaque assay pfu, plaque-forming unit(s).